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Boundary Discontinuity Designs: Theory and Practice

Matias D. Cattaneo, Rocio Titiunik, Ruiqi Rae Yu

arXiv 9 Nov 2025 · Econometrics

arXiv:2511.06474 · PDF · DOI · OpenAlex · Extracted main text

Abstract

The boundary discontinuity (BD) design is a non-experimental method for identifying causal effects that exploits a thresholding rule based on a bivariate score and a boundary curve. This widely used method generalizes the univariate regression discontinuity design but introduces unique challenges arising from its multidimensional nature. We synthesize over 80 empirical papers that use the BD design, tracing the method's application from its formative stages to its implementation in modern research. We also overview ongoing theoretical and methodological research on identification, estimation, and inference for BD designs employing local polynomial regression, and offer recommendations for practice.

Citation extraction

126
references
268
in-text mentions
126
distinct cited
23
self-citations
15,854
main-text words

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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1Cattaneo, Matias D. and Titiunik, Rocio and Yu, Ruiqi (Rae) (2025) Estimation and Inference in Boundary Discontinuity Designs: Location-Based Methods self1.000175100%
2Cattaneo, Matias D. and Titiunik, Rocio and Yu, Ruiqi (Rae) (2026) Estimation and Inference in Boundary Discontinuity Designs: Pooling-Based Methods self1.000114100%
3Cattaneo, Matias D. and Titiunik, Rocio and Yu, Ruiqi (Rae) (2025) Estimation and Inference in Boundary Discontinuity Designs: Distance-Based Methods self1.000104100%
4Black, Sandra E (1999) Do better schools matter? Parental valuation of elementary education1.000104100%
5Keele, Luke J. and Rocio Titiunik (2015) Geographic Boundaries as Regression Discontinuities self1.00085100%
6Card, David and Krueger, Alan B (1994) Minimum Wages and Employment: A Case Study of the Fast-Food Industry in New Jersey and Pennsylvania1.00083100%
7Holmes, Thomas J (1998) The effect of state policies on the location of manufacturing: Evidence from state borders1.00083100%
8Londoño-Vélez, Juliana and Rodr\'iguez, Catherine and Sánchez, Fabio (2020) Upstream and downstream impacts of college merit-based financial aid for low-income students: Ser Pilo Paga in Colombia1.00074100%
9Reardon, Sean F and Robinson, Joseph P (2012) Regression Discontinuity Designs with Multiple Rating-Score Variables1.00054100%
10Wong, Vivian C and Steiner, Peter M and Cook, Thomas D (2013) Analyzing regression-discontinuity designs with multiple assignment variables: A comparative study of four estimation methods1.00054100%

Showing the top 10 of 126 scored citations.

Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

Citing paperIntensityMentionsSections
1Statistical Decisions and Partial Identification: With Application to Boundary Discontinuity Design0.40511